Combination of Paths

• Shifting permutations up ... https://youtu.be/Ar0AEWaO2Xk?list=PL9TOCZErLZcPbF_Z7_u3-Y7fPcYRMRepC&t=1327 ** https://docs.google.com/drawings/d/1r7EyC1kamjwimdmg-Oac4JlhDC9Gyv7XOokitHqUcU4/edit